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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "BaseTile.h"
#if USE(ACCELERATED_COMPOSITING)
#include "GLUtils.h"
#include "SkBitmap.h"
#include "SkBitmapRef.h"
#include "SkCanvas.h"
#include "TilesManager.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#ifdef DEBUG
#include <cutils/log.h>
#include <wtf/CurrentTime.h>
#include <wtf/text/CString.h>
#undef XLOG
#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "BaseTile", __VA_ARGS__)
#else
#undef XLOG
#define XLOG(...)
#endif // DEBUG
namespace WebCore {
#ifdef DEBUG_COUNT
static int gBaseTileCount = 0;
int BaseTile::count()
{
return gBaseTileCount;
}
#endif
BaseTile::BaseTile(TiledPage* page, int x, int y)
: m_page(page)
, m_x(x)
, m_y(y)
, m_texture(0)
, m_scale(1)
{
#ifdef DEBUG_COUNT
gBaseTileCount++;
#endif
}
BaseTile::~BaseTile()
{
#ifdef DEBUG_COUNT
gBaseTileCount--;
#endif
}
void BaseTile::reserveTexture()
{
android::Mutex::Autolock lock(m_varLock);
m_texture = TilesManager::instance()->getAvailableTexture(this);
XLOG("%x (%d, %d) reserveTexture res: %x...", this, x(), y(), m_texture);
}
void BaseTile::removeTexture()
{
android::Mutex::Autolock lock(m_varLock);
XLOG("%x removeTexture res: %x...", this, m_texture);
m_texture = 0;
}
void BaseTile::setUsedLevel(int usedLevel)
{
if (m_texture)
m_texture->setUsedLevel(usedLevel);
}
// Called from the main GL thread
void BaseTile::draw(float transparency, SkRect& rect)
{
if (!m_texture) {
XLOG("%x (%d, %d) trying to draw, but no m_texture!", this, x(), y());
return;
}
PaintingInfo info(m_x, m_y, m_page->glWebViewState());
TextureInfo* textureInfo = m_texture->consumerLock();
if (!textureInfo) {
XLOG("%x (%d, %d) trying to draw, but no textureInfo!", this, x(), y());
m_texture->consumerRelease();
return;
}
if (m_texture->consumerTextureSimilar(info)) {
TilesManager::instance()->shader()->drawQuad(rect, textureInfo->m_textureId,
transparency);
}
m_texture->consumerRelease();
}
bool BaseTile::isBitmapReady()
{
if (!m_texture)
return false;
if (m_texture->owner() != this)
return false;
PaintingInfo info(m_x, m_y, m_page->glWebViewState());
return m_texture->consumerTextureUpToDate(info);
}
// Called from the texture generation thread
bool BaseTile::paintBitmap()
{
XLOG("paintBitmap(%x) %d, %d with page %x", this, m_x, m_y, m_page);
// the mutex ensures you are reading the most current value
m_varLock.lock();
const int x = m_x;
const int y = m_y;
const float scale = m_scale;
TiledPage* tiledPage = m_page;
BackedDoubleBufferedTexture* texture = m_texture;
m_varLock.unlock();
if (!texture)
return false;
TextureInfo* textureInfo = texture->producerLock();
// at this point we can safely check the ownership
// (if the texture got transferred to another BaseTile
// under us)
if (texture->owner() != this || texture->usedLevel() > 1) {
texture->producerRelease();
return false;
}
PaintingInfo info(x, y, tiledPage->glWebViewState());
if (texture->consumerTextureUpToDate(info)) {
texture->producerRelease();
return true;
}
float tileWidth = textureInfo->m_width;
float tileHeight = textureInfo->m_height;
const float invScale = 1 / scale;
float w = tileWidth * invScale;
float h = tileHeight * invScale;
SkCanvas* canvas = texture->canvas();
canvas->save();
canvas->scale(scale, scale);
canvas->translate(-x * w, -y * h);
bool didPaint = tiledPage->paintBaseLayerContent(canvas);
canvas->restore();
#ifdef DEBUG
SkPaint paint;
paint.setARGB(128, 255, 0, 0);
paint.setStrokeWidth(3);
canvas->drawLine(0, 0, tileWidth, tileHeight, paint);
paint.setARGB(128, 0, 255, 0);
canvas->drawLine(0, tileHeight, tileWidth, 0, paint);
paint.setARGB(128, 0, 0, 255);
canvas->drawLine(0, 0, tileWidth, 0, paint);
canvas->drawLine(tileWidth, 0, tileWidth, tileHeight, paint);
#endif
texture->producerUpdate(this, textureInfo, info);
return didPaint;
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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